ABAP Select data from SAP table BKKC02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKKC02 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BKKC02. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BKKC02 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BKKC02 TYPE STANDARD TABLE OF BKKC02,
      WA_BKKC02 TYPE BKKC02,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BKKC02> TYPE BKKC02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKKC02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKKC02
  INTO TABLE IT_BKKC02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKKC02
*  INTO TABLE @DATA(IT_BKKC022).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BKKC02 INDEX 1 INTO DATA(WA_BKKC022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKKC02 ASSIGNING <BKKC02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKKC02>-MANDT = 1.
<BKKC02>-BKKRS = 1.
<BKKC02>-FIKEY = 1.
<BKKC02>-FIKEYC = 1.
<BKKC02>-DOCNO = 1.

ENDLOOP.

LOOP AT IT_BKKC02 INTO WA_BKKC02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKKC02-BUDAT, sy-vline,
  WA_BKKC02-WAERS, sy-vline,
  WA_BKKC02-HKONT, sy-vline,
  WA_BKKC02-SHKZG, sy-vline,
  WA_BKKC02-SUMSZ, sy-vline,
  WA_BKKC02-GL_SUMSZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKKC02 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BKKC02 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BKKC02 INTO WA_BKKC02.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKKC02-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKC02-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BKKC02-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKC02-VBUND.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BKKC02_STR, 
MANDT TYPE STRING,
BKKRS TYPE STRING,
FIKEY TYPE STRING,
FIKEYC TYPE STRING,
DOCNO TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
HKONT TYPE STRING,
SHKZG TYPE STRING,
SUMSZ TYPE STRING,
GL_SUMSZ TYPE STRING,
BUDAT_GL TYPE STRING,
VALUT TYPE STRING,
A_AMOUNT TYPE STRING,
MWSKZ TYPE STRING,
TAXIT TYPE STRING,
KTOSL TYPE STRING,
GSBER TYPE STRING,
VBUND TYPE STRING,
ZUONR TYPE STRING,
WWERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKKC02_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BKKC02_STR-MANDT sy-vline 
WA_BKKC02_STR-BKKRS sy-vline 
WA_BKKC02_STR-FIKEY sy-vline 
WA_BKKC02_STR-FIKEYC sy-vline 
WA_BKKC02_STR-DOCNO sy-vline 
WA_BKKC02_STR-BUDAT sy-vline 
WA_BKKC02_STR-WAERS sy-vline 
WA_BKKC02_STR-HKONT sy-vline 
WA_BKKC02_STR-SHKZG sy-vline 
WA_BKKC02_STR-SUMSZ sy-vline 
WA_BKKC02_STR-GL_SUMSZ sy-vline 
WA_BKKC02_STR-BUDAT_GL sy-vline 
WA_BKKC02_STR-VALUT sy-vline 
WA_BKKC02_STR-A_AMOUNT sy-vline 
WA_BKKC02_STR-MWSKZ sy-vline 
WA_BKKC02_STR-TAXIT sy-vline 
WA_BKKC02_STR-KTOSL sy-vline 
WA_BKKC02_STR-GSBER sy-vline 
WA_BKKC02_STR-VBUND sy-vline 
WA_BKKC02_STR-ZUONR sy-vline 
WA_BKKC02_STR-WWERT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.